package com.sky.service.impl;

import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 使用md5对明文密码进行加密
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        System.out.println(password);
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employeeDTO
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();

        //拷贝对象属性
        BeanUtils.copyProperties(employeeDTO, employee);

        //设置账号状态,1表示正常，0表示锁定
        employee.setStatus(StatusConstant.ENABLE);

        //记录账号创建时间和更新时间
        employee.setUpdateTime(LocalDateTime.now());
        employee.setCreateTime(LocalDateTime.now());

        //设置默认密码
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        //记录当前创建人id和修改人id
        employee.setUpdateUser(BaseContext.getCurrentId());
        employee.setCreateUser(BaseContext.getCurrentId());

        employeeMapper.insert(employee);
    }

    /**
     * 员工分页
     * @param queryDTO
     * @return
     */
    public PageResult PageQuery(EmployeePageQueryDTO queryDTO) {
        //开始分页查询
//        PageHelper.startPage(queryDTO.getPage(),queryDTO.getPageSize());

        queryDTO.setPage((queryDTO.getPage() - 1) * queryDTO.getPageSize());
      List<Employee> page= employeeMapper.PageQuery(queryDTO);

        return new PageResult(page.size(), page);

    }

    /**
     * 启用禁用员工账号
     * @param status
     * @param id
     */
    public void startOrStop(Integer status, Long id) {
        Employee employee = Employee
                .builder().
                status(status).
                id(id).
                updateTime(LocalDateTime.now()).
                updateUser(BaseContext.getCurrentId()).
                build();
        employeeMapper.update(employee);
    }


    /**
     * 根据id查询员工
     * @param id
     * @return
     */
    public Employee getById(Long id) {
       Employee employee= employeeMapper.getById(id);
       employee.setPassword("******");
        return employee;
    }

    /**
     * 更新员工
     * @param employeeDTO
     */
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        employee.setUpdateUser(BaseContext.getCurrentId());
        employee.setUpdateTime(LocalDateTime.now());
        employeeMapper.update(employee);
    }
}
